Ying Gao, Yujing Lin, Min Xu, Hanxiao Bian, Chi Zhang, Jingyu Wang, Hanqing Wang, Yaping Xu, Qingfeng Niu, Jinhua Zuo, Da-Qi Fu, Yu Pan, Kunsong Chen, Harry Klee, Zhaobo Lang, Bo Zhang
Flavor-imparting volatile chemicals accumulate as fruit ripen, making major contributions to consumer liking. The NAC transcription factor non-ripening (NAC-NOR) and DNA demethylase 2 (SlDML2) are essential for tomato fruit ripening, however, potential roles and the relationship between these two regulators in the synthesis of volatiles is lacking. Here, we show substantial reductions in fatty acid and carotenoid-derived volatiles in tomato slnor and sldml2 mutants. An unexpected finding is the redundancy and divergence in volatile profiles, biosynthetic gene expression and DNA methylation in slnor mutant and sldml2 mutant relative to wild type tomato fruit...
June 10, 2022: New Phytologist